Duplicating device



H. J. REARDON DUPLICATING DEVICE March 23, 193 7.

Filed July 14, 1936 2 Sheets-Sheet l Inventor Harv-g Jjiardorz QM @QW March 23, 1937. J QN I 2,074,669

UPLICATING DEVICE Filed July 14, 1936 2 Sheets-Sheet 2 tion and arrangement of Patented Mar. 23, 1937 UNITED STATES PATENT osrlce DUPLICATING DEVICE Harvey J. Reardon, Chicago, 111. Application July 14, 1936, Serial No. 90,551

4 Claims.

roller arranged adjacent each end of the said supporting frame, a gelatin sheet or pad windable alternately onto and off from the said rollers,

and means for manually operating said rollers.

An additional object of the present invention is to provide a newand improved device for operating the said rollers.

Another object of the present invention is to provide a novel device for latching the said rollers against retrograde or reverse movement so as to hold the gelatin band or sheet in a preselected position.

A further object of the present invention is to provide a novel and simple device said rollers in position of use and against accidental or unintentional displacement therefrom.

Other objects will appear hereinafter.

The invention consists in the novel combinaparts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings showing the preferred form of construction, and in which:

Fig. 1 is a perspective view of a preferred form of the new duplicating device;

Fig. 2 is a top plan view of the same, showing a part of the top of the same broken away so as to show the interior thereof;

Fig. 3 is a sectional view, on line 3-3 in Fig. 2, showing the new latching device, embodied in-the present invention, for latching the rollers against unintentional or accidental removal from their position of use; 7

Fig. 4 is a central or longitudinal vertical sectional view, on line 4-4 in Fig. 2;

Fig. 5 is a transverse vertical sectional view, on line 5-5 in Fig. 4; V i

Fig. 6 is avertical sectional view on line 6--6 in Fig. 5 showing a preferred form of the ratchet 'mechanism associated with each of the rollers and the hand knobs for preventing retrograde or reverse. movement of the same; and

Fig. '7 is a sectional view showing a modified form of the roller and ratchet mechanism.

A preferred form of the new duplicating device for latching the handle portion is shown in Figs. 1 to 6 inclusive of the drawings, is therein generally indicated at l0, and comprises a supporting frame H which includes side walls 12 and I3 and a base or bottom wall l4.

Arranged adjacent one end of the supporting frame II is a roller l5 and this roller l5 has an end portion or trunnion it which is rotatably journaled in a bearing I! which, in turn, is attached to the side wall l3 of the supporting frame I! (Fig. 5), this end portion or trunnion l6 having a latching device 31! associated therewith and which latching device will be described in detail hereinafter. At its other end the roller I5 is provided with a key portion l8, which is substantially rectangular in cross section (Fig. 6), and this key portion E8 of the roller i5 is adapted to be inserted into a correspondingly shaped recess or socket l9 which is formed in a short or stub shaft 2!], this stub shaft 29 being rotatably journaled in the side wall l2 and having a hand knob or handle 2| attached thereto.

Fixedly mounted on, that is, attached to, the stub shaft 28 is a ratchet 22 and this ratchet 22 is enclosed within a housing 23 (Fig. 6) which is removably mounted on the side wall I2 of the supporting frame II in any suitable manner. This ratchet 22 forms a part of a latching device, which is generally indicated at 55, (Fig. 6) and this latching device 50 includes a latch dog 25, the inner end portion 24 of this latch dog 25 being engageable. with the teeth of the ratchet 22. This latch dog 25 is pivotally mounted, between its ends, as at 26, upon the side wall l2, and has a 21 which projects exteriorly of the housing 23 through a slot 28 which is formedin the latter.

The duplicating device It! also includes a second roller 29 (Fig. 2) which is similar to the roller I5 and is arranged at the opposite end of the supporting frame H from the roller l5. Attached to the roller 29, at one end thereof, is a knob or handle til. One end portion or trunnion 38 of this roller 29 is rotatably journaled in the side wall [3 of the roller 15 (Fig. 5) and associated with the other end portion of the roller 29 is a latching device, which is generally indicated at 49, and which is exactly like the latching device 55 which is shown in Fig. 6 (as being associated with the roller l5 and which has been described hereinbefore), and hence the same need not again be described herein since these parts are duplicates.

Windable alternately onto and off from the rollers l5 and 29 is a gelatin sheet or pad 3! and this gelatin sheet or pad 3| is movable over and across a horizontally extending table or bed 32 which is formed as a part of the supporting frame II at the top of the latter.

5 A clamping bail or gripper 33 is pivotally mounted on the supporting frame I I, as at 34, by means of arms 35, and this clamping bail or gripper 33, when in use, serves to bear down upon one end portion of the paper disposed upon the gelatin sheet or pad 3| so as to hold the same in position of use.

The present invention includes the provision of a novel device for latching the rollers I5 and 29 against unintentional or accidental removal from their position of use, and one of these latching devices is shown in detail in Fig. 3, the same being generally indicated therein at 36 and being associated with the roller 29 at one end thereof, an exactly similar latching device 31 being asso- 0 ciated with the roller I5 at one end of the latter. However, since these latching devices 36 and 31 are duplicates only one of the same is shown in the drawings and will be described in detail herein, the same being the latching device 36 which is associated with the roller 29.

The latching device 36 includes a latch keeper plate 39 which is attached, as at 40, to the. side wall I3 of the supporting frame II, on the inner side of the said side wall, and formed in this keeper plate 39 is an arcuate slot 4|. This slot 4| has a relatively wide throat or inlet 42 and at its inner end the slot 42 is narrowed to a relatively restricted portion 43 which is made just large enough to receive and accommodate the end portion or trunnion 38 of the roller 29. The slot 4| also has an enlarged portion or step 44 which is located just forwardly of, and below, the inner end or restricted portion 43 of the slot 4|, for a reason which will be explained presently.

The new latching device 36 also includes a latch member 45, which is pivotally mounted between its ends, as at 46, upon the side wall I3 of the supporting frame I2, this latch member 45 having a counterbalanced handle portion 47 at its outer end and having a relatively narrow inner end portion or arm 48 which projects into and works in the slot 4|.

Operation In the use of the preferred form of the new duplicating device, which is shown in Figs. 1 to 6, inclusive, the gelatin pad or sheet 3| is arranged upon the device in the manner shown, with its end portions attached to the rollers I5 and 29 in any suitable manner; it being understood, in this connection, that the end portions of gelatin sheets or pads, such as 3|, are customarily attached to canvas or other fabric strips and the end portions of the latter are attached to or wound onto the rollers. Accordingly, the body or bulk of the pad 3| may be wound onto one of the rollers, thus, for example, the roller I5, with a portion of the pad extending horizontally over the table 32, it being understood that'the gelatin pad 3| may have a plurality of different sets of copy or printed'matter written or inscribed thereon in duplicating ink, so that at the start of the operation the first copy to be reproduced may be that which is inscribed onto the end portion of the pad 3| which extends over the horizontal table 32. Thus it will be seen that a plurality of diiferent copies may be reproduced by successively laying sheets of paper or the like 'on'the horizontal portion of the gelatin pad 3| whereon they may be clamped by means of the clamping bail or gripper 33. Accordingly, as and when it is desired to bring the other sets of copy or inscriptions on the pad 3| into duplicating position, this may be accomplished by turning the hand knob or handle 30 (counterclockwise, as seen in Fig. 1) thereby winding the gelatin pad 3| off from the roller I5 and onto the roller 29.

When the hand knob 30 is rotated, to wind the gelatin pad 3| 01f from the roller I5 and onto the roller 29, this rotation of the hand knob 30 is transmitted, by way of a key and slot connection, exactly like that shown at I8-I9 in Fig. 6, from a stub shaft, (not shown, but which is exactly like the stub shaft 29) to the roller 29, and during this operation the teeth of the ratchet (corresponding to the ratchet 22) of the latching device 49 ride (counterclockwise, Fig. 6) over the end portion of the latch dog (corresponding to the latch'dog 25) of the same, it being noted, in this connection, that the end portion of the said latch dog of the latching device 49 is normally urged, by the counterbalanced outer end portion or handle thereof (corresponding to the handle 21) into engagement with the teeth of the ratchet so as to prevent retrograde movement of the latter and the shaft 29 (clockwise, Fig. 6).

Assuming, in the foregoing example, that the gelatin pad or sheet 3| has been wound off from the roller fabric end portions or attaching strips which are arranged at the ends of the pad) and that it is desired to reverse this procedure, and to wind the pad 3| back onto the roller I5; the operator of the device may then accomplish this by grasping the counterbalanced outer end or handle portion 27 of the latch dog 25 of the latching device 50 and pivoting the same (clockwise, Fig. 6) so as to move the inner end portion 24 thereof out of latching engagement with the teeth of the ratchet 22 of the latching device 50, and, while thus holding the latch dog 21 out of engagement with the teeth of the ratchet 22, the operator may, by turning the hand knob 2| (clockwise, Fig. 1) wind the gelatin sheet or pad 3| off from the roller 29 and onto the roller I5. Thus the present invention provides a device for readily and easily unwinding the gelatin pad or sheet 3| off from one roller and onto the other; and the present invention also provides a novel device for .3

latching the rollers I5 and 29 and the gelatin pad 3| in a fixed position and against retrograde or reverse movement when the desired portion of the gelatine pad has been moved into, and latched in, duplicating position.

The exactly similar latching devices 36 and 3'! (and one of which is shown in detail in Fig. 3) are designed for the purpose of latching the rollers 29 and I5, respectively, in position of use and againstunintentional or accidental displacement therefrom, and likewise for the purpose of enabling the operator of the device conveniently and quickly to remove the rollers as and when desired, for the purpose of replacing the gelatin sheet 3| or for any other reason. Thus, for example, when it is desired to insert the roller 29 into position of use, this may be accomplished by inserting the key portion (similar to the key portion I8, Fig. 6) into the corresponding slot which is provided therefor in the stub shaft on which the hand knob 30 is mounted, (see Fig. 6), whereupon the operator may insert the other end portion or trunnion 38 of the roller 29 through the mouth 42 of the slot 4| and into the restricted or inner end portion 43 of the same,

I5 onto the roller 29 (except for the it being noted that during this operation the said :trunnion or end portion 38 of the roller 29 will engage the inner end portion or arm .48 of the latch member 45 and will thereby pivot the latter, at 46, (clockwise, Fig. 3). During this operation the inner endportion or arm 48 of the latch member 45 will pivot downwardly into engagement with the notched or lower step portion 44 of the latch keeper plate 39, thus allowing the trunnion or end portion 38 of the roller 29 to pass into the narrow or restricted inner end por- -tion 43 of the slot 4|. Accordingly, when the operator releases the latch member 45, the counterbalanced outer end portion 41 thereof will pivot 15 the same, by gravity, at 46,. (counterclockwise, Fig. 3) into the position inwhich the same is shown in Fig. 3; and when the inner end portion 1 or arm 48 of the latch member 45 is disposed in .this position it prevents the trunnionor end por- 20 tion 38 of theroller 29 from accidentally or unintentionally moving out of the slot 4 I, since with the latch member 45 disposed as in Fig. 3 any lateral movement of the roller 29 will cause the trunnion or end portion 38 of the same to engage 25 the inner end portion 48 of the latch member 45 and thereby jam the latter against the wall of the slot 4|. It will, therefore, be seen that in order to remove the roller 29 from its position of use the operator must first manually grasp the outer end portion or handle 41 of the latch member 45 and thereby pivot the same, at 46 (clockwise, Fig. 3), thus moving'the inner end portion 48 of the latch member 45 downwardly into engagement with the lower edge portion or step 44 of the latch keeper plate 39, thus allowing the end portion or trunnion 38 of the roller 29 to be moved out through the slot 4| and thereby'per- .mitting the roller 29 to be removed from its mountings or position of use, it being understood, 40 in this connection thatthe latching device 31,

which is associated with the roller |5, is similar to the latching device 36, both in construction and in operation, and that the operations of inserting the roller l5 into its mountings and re- 45 moving the same therefrom are similar to those hereinbefore described in connection with the roller 26 and the latching device 36.

It will be seen, therefore, that the latching devices 36 and 31 provide simple and convenient 50 mechanisms for latching the rollers 29 and |5, re-

spectively, in position of use in their mountings and against unintentional or accidental removal therefrom.

A modified form of one feature of the present invention is shown in Fig. '7, and in this form of the invention the end or key portions l8 of the rollers I5 (and 29), which are embodied in the form of the invention shown in Figs. 1 to 6, inclusive, and which are substantially rectangular 60 in cross-section (Fig. 6), are replaced by a pair of pins or lugs 52 which are mounted on, and

project from one end of, the roller 53, these being pins or lugs 52 being preferably cylindrical in shape, although other forms or shapes of the 65 same may be employed; these pins or lugs 52 being receivable in correspondingly shaped recesses or sockets (not shown) but which may be provided therefor in the stub shaft 54, which corresponds to this stub shaft 28 in the pre- 70 ferred form of the invention which is shown in Figs. 1 to 6, inclusive, this stub shaft 54 having a hand knob 55 mounted thereon which corresponds to the knobs 28 and 2|. Otherwise, that is, except as above distinguished, being similar in 7 5 construction and operation to the preferred form of the invention which'is' shown inFigsJl to 6,

inclusive.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification, without departing iromthe spirit of the invention. I, therefore, do not wish' to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims. I

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

1. In a duplicating device, a supporting frame including spaced vertically extending side walls and a horizontally extending table or bed ar-- ranged between the said side walls and adjacent the top of the latter, a roller rotatably mounted upon the said supporting frame adjacent each end thereof and extending between the said side walls, a gelatin duplicating pad or sheet extending over said table and windable alternately onto and off from the said rollers, means for operating each of said rollers including astub shaft rotatably journaled inone of the said side walls of said supporting frame and having a socket formed therein, each of said rollers including an end portion or trunnion receivable in the corresponding one of said sockets, means forpreventing retrograde or reverse movement of each of said rollers, said second and last-named means including a ratchet mounted on each of the said stub shafts, a latch dog pivotally mounted between its ends on the said one of said side walls and adjacent the corresponding one of said ratchets, each of said latch dogs including an inner end portion engageable with the teeth of the corresponding one of said ratchets, each of said latch dogs having a counterbalanced outer end portion providing ahandle normally urging the said inner end portion of the same, by gravity, into engagement with the corresponding one of said ratchets, and means for latching each of the said rollers in positon of use and against unintentional or accidental displacement therefrom, each of said lastnamed means including a latch plate attached to the other one of said side walls and having a slot or groove formed therein for the reception of the said end portion or trunnion of the corresponding one of said rollers, and a latch member pivotally mounted between its ends on the said other one of said side walls and having an inner end portion adapted to project across and close the corresponding one of said grooves, each of said second-named latch members having a counterbalanced outer end portion or handle urging the said inner end portion of the same, by gravity, into position to close the corresponding one of said grooves so' as to prevent the withdrawal of the said end portion or trunnion of the corresponding roller therethrough.

2. In a duplicating device, a supporting frame including spaced, vertically extending side walls and horizontally extending table or bed arranged between the said side walls and adjacent the top of the latter, a roller rotatably mounted upon the said supporting frame adjacent one end thereof and extending between said side walls, a gelatin duplicating pad or sheet extending over said table and windable alternately onto and ofi from said roller, means for operating said roller including a stub shaft rotatably journaled in one of the said side walls of said supporting frame and having a socket formed therein, said roller including an end portion or trunnion receivable in the said socket, means for preventing retrograde or reverse movement; of said roller, said second-named and last-named means including a ratchet mounted on the said stub shaft, a latch dog pivotally mounted between its ends on the said one of said side walls and adjacent the said ratchet, said latch dog including an inner end portion engageable with the teeth of said ratchet, said latch dog having a counterbalanced outer end portion providing a handle normally urging the said inner end portion of the same, by gravity, into engagement with the said ratchet, and means for latching the said roller in position of use and against unintentional or accidental displacement therefrom, said last-named latching means including a latch plate attached to the other one of said side walls and having a slot or groove formed therein for the reception of the said end portion or trunnion, a latch member pivotally mounted at its ends on the said other one of said side walls and having an inner end portion adapted to project across and close the said groove, said secend-named latch member having a counterbalanced outer end portion or handle urging the said inner end portion of the same, by gravity, into position to close the said groove so as to prevent the withdrawal of the said end portion or trunnion therethrough.

3. In a duplicating machine, a supporting frame including spaced vertically extending side walls, a roller rotatably mounted upon the said supporting frame, and between the said side walls, for moving a gelatin sheet or pad relative to and across said supporting frame, said roller having an end portion or trunnion journaled in one of said side walls, and means for preventing unintentional or accidental displacement of said roller 40 from position of use, said means including a latch and having a slot or .its ends on the said keeper plate attached to one of said side walls groove formed therein for the reception of the said end portion or trunnion, and a latch member pivotally mounted between one of said side walls, and having an end portion normally projecting into said slot or groove so as to close the latter, said latch member including a counterbalanced outer end portion or handle normally urging the said inner end portion of the gravity, into position to close the said groove or slot so as to prevent the withdrawal of said end portion or trunnion therethrough.

4. In a duplicating machine, a supporting frame including spaced walls, rollers rotatably mounted upon the said supporting frame, and extending between the said side walls, for moving a gelatin sheet or pad relative to and across the said supporting frame,

each of said rollers having an end portion or trun-' nion journaled in one of said side walls, and means for preventingunintentional or accidental displacement of said rollers from position of use, said means including a latch keeper plate attached to the said one of said side walls and having a slot or groove formed therein for the reception of the said end portion or trunnion of the corresponding one of said rollers, and a latch member pivotally mounted between its ends on the said one of said side walls and having an end portion normally projecting into the corresponding one of said slots or grooves so as to close the latter, each of said latch members including a counterbalanced outer end portion or handle normally urging the said inner end portion of the said latch member, by gravity, into position to close the said groove or slot so as to prevent the withdrawal of the said end portion or trunnion therethrough.

HARVEY J. REARDON.

said latch member, by

vertically extending side' 

